pci.h File Reference

The Header files for actual PCI source. More...

#include <basics.h>
#include <hal.h>
#include <graphics.h>
#include <drivers/rtl8139.h>
#include <debugger.h>
#include <ahci.h>
#include <nvme.h>
#include <isr.h>
#include <pci_id.h>

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Go to the source code of this file.

Classes
struct	pci_location_t

Macros
#define	PCI_CONFIG_ADDRESS   0xCF8
#define	PCI_CONFIG_DATA   0xCFC

Typedefs
typedef void(*	pci_probe_fn) (uint8_t bus, uint8_t slot, uint8_t function)

Functions
int16	pci_read_word (int16 bus, int16 slot, int16 func, int16 offset)
	Read a 16-bit value from a PCI configuration register.
int16	getVendorID (int16 bus, int16 device, int16 function)
	Gets the Vendor ID from PCI.
int16	getDeviceID (int16 bus, int16 device, int16 function)
	Gets the Device ID from PCI.
int16	getClassId (int16 bus, int16 device, int16 function)
	Gets the Class ID from PCI.
int16	getSubClassId (int16 bus, int16 device, int16 function)
	Gets the Sub-class ID from PCI.
int8	getProgIF (int16 bus, int16 device, int16 function)
void	probe_pci ()
	Scans (Probes) PCI Devices.
int32	pci_config_read_dword (int8 bus, int8 slot, int8 func, int8 offset)
	Function to read a 32-bit value from the PCI configuration space.
void	pci_config_write_dword (int8 bus, int8 slot, int8 func, int8 offset, uint32_t value)
int32	get_ahci_bar_address (int8 bus, int slot, int func, int bar_num)
	Gets the AHCI bar address.

Variables
cstring	display_adapter_name
cstring	GPUName [1]
string	using_graphics_card
int64 *	graphics_base_Address
int	total_devices

Detailed Description

The Header files for actual PCI source.

Author

Pradosh (prado.nosp@m.shga.nosp@m.me@gm.nosp@m.ail..nosp@m.com)

Version

0.1

Date

2023-10-29

Copyright

Copyright (c) Pradosh 2023

Definition in file pci.h.

Macro Definition Documentation

PCI_CONFIG_ADDRESS

#define PCI_CONFIG_ADDRESS   0xCF8

Definition at line 33 of file pci.h.

PCI_CONFIG_DATA

#define PCI_CONFIG_DATA   0xCFC

Definition at line 34 of file pci.h.

Typedef Documentation

pci_probe_fn

typedef void(* pci_probe_fn) (uint8_t bus, uint8_t slot, uint8_t function)

Definition at line 36 of file pci.h.

Function Documentation

get_ahci_bar_address()

int32 get_ahci_bar_address	(	int8	bus,
		int	slot,
		int	func,
		int	bar_num )

Gets the AHCI bar address.

Parameters

bus	The PCI bus number.
slot	The PCI slot number.
func	The PCI function number.
bar_num	The Base Address Register Number.

Returns

int32

getClassId()

int16 getClassId	(	int16	bus,
		int16	device,
		int16	function )

Gets the Class ID from PCI.

Parameters

bus
device
function

Returns

int16 Class ID

getDeviceID()

int16 getDeviceID	(	int16	bus,
		int16	device,
		int16	function )

Gets the Device ID from PCI.

Parameters

bus
device
function

Returns

int16 Device ID

getSubClassId()

int16 getSubClassId	(	int16	bus,
		int16	device,
		int16	function )

Gets the Sub-class ID from PCI.

Parameters

bus
device
function

Returns

int16 Sub-class ID

getVendorID()

int16 getVendorID	(	int16	bus,
		int16	device,
		int16	function )

Gets the Vendor ID from PCI.

Parameters

bus
device
function

Returns

int16 Vendor ID

pci_config_read_dword()

int32 pci_config_read_dword	(	int8	bus,
		int8	slot,
		int8	func,
		int8	offset )

Function to read a 32-bit value from the PCI configuration space.

Parameters

bus
slot
func
offset

Returns

int32

pci_read_word()

int16 pci_read_word	(	int16	bus,
		int16	slot,
		int16	func,
		int16	offset )

Read a 16-bit value from a PCI configuration register.

This function reads a 16-bit value from a specified PCI configuration register using the provided bus, slot, function, and offset parameters.

Parameters

bus	The PCI bus number.
slot	The PCI slot number.
func	The PCI function number.
offset	The offset within the PCI configuration register to read.

Returns

The 16-bit value read from the specified PCI configuration register.